Gas-control valve



1929- KRAFT ET AL 1,734,258

GAS CONTROL VALVE Filed Aug. 5. 1.927.

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m! H a: MI. ".4 3 l mag-m 33' INVENTOR ATTORNEY Patented Nov. 5, 1929 UNITED STATES muses KRAFT AND LEOPOLD MAYR, on ELIZABETH, JERSEY I GAS-CONTROL VALVE 1 Application fi1ed August 5, 1927. Serial Nd. 510,855.

This invention relates to electromagnetically controlled valves in general and partic- 'ularly to the kind adapted for use in connection with controlling systems of gaseous or .5 other media.

This application is a division in part an continuation of our original application, Serial Number 157 ,315, filed December 27, 1926, for electric control system. 1

One'of the objects of our invention is to providean inexpensive, effective, simple and economically operating electromagnetic valve which, when connected with a source of energy in the manner outlined in our above mentioned co-pending application, will keep automatically open once energized by an initial current impulse passing through its solenoid. i w Another object of our invention is to pro- 7 vide, in connection with this valve, various means for accomplishing the desired results and enhancin the efficiency of its operatlon.

The foregoing and further objects will bemore fully apparent from the following description and the accompanying drawings, forming part of this disclosure, but by no means intended to limit thesame to the showing, references being made from time to time to our-first mentioned copen-d-ing application. Referring to the drawings, Fig. 1 illustrates a vertical cross sectional view through one form of our valve.

' Fig. 2 is a side elevation partially in section of a modified" interior arrangement of our valve, and? I V Fig. 3 is a partial top view of the latter.

I p In Fig. 1 there will be seen a valve casing 10, provided with a pilot light connection 11, adapted .to receive a' conduit leading to a gas burner (not shown) he intake f r the gas is denoted at 12, while the outlet of the-main gassupply is at "18." At the inner web' portion 14: there is provided a seat 15 for a ball or other type of valve 16. -Necky 17 of the valve casing is thr'eaded'to receive the threaded end 18 of housing 19, in which the entire operating arrangement of our valve is air-tightly enclosed. It'will be observed at the top of the housing, is a cover- 20 through which pass bolts 21, 22

and 23. All of them "reinsulatedv from cover 20 as shown at 242. Below cover 20, there will be seen-a solenoid 25, held between insulating discs 26 and 27 while "at theicentralportion of, the solenoid is provideda tubular guide Y member 28, the function of; which "will be explained presently.

Above the solenoid thereis provided asoft iron disc 29 which isspacedfromthe cover by spacers 30. At thefcenter of disc 29 there is provided a soft. iron bushing 31,'havingv a central opening 32, through which passes stem 33 of the valve. Spindle '33 .passes through a softmetal Ico'r-e 84;, adapted'to be I attracted by the solenoid when energized.

It will be observed that boltof binding post-'21holds thej'spring member 35, while binding" post 23 supports another spring member 36.- A "conduit37 leads alsofrom binding post 23 to the solenoid, while a cond'uit'38 connects the other end of the solenoid with binding post 22. 1

Contactsprin'gs'35 and 36"are actuated by stem 83'of the valve, whichlatter isel'ectrically insulated from the springs, as shown for instance at33'."

- Binding posts 22 and 23arelintended to be connected with an. electricsou rce' of energy which is controlled by a switch (not shown I in the drawing). Binding post 21. is also connected with the same source of energy. The arrangement of" connecting the several binding posts to the source of supply is as follows: f

Binding post 22-connects with lone poten- 'tial, saythe positive. Binding posts 21' and 23 are connected to the otheripot'ential, for instancethe negative. A specially designed switch is placed in series between the electric source, and bi-nding post 23.1 The switch is so arranged that the moment contact is made, electric energyis passedfrom the electric source through bindin g post '22, to the solenoid, and fromthere through binding post 23 back to theelectric source. The moment the switch-however is,',released', connections between binding post 23 and the electricsource is interruptedi The moment the solenoid is; energized'by the initial switch contact, the core 34 is drawn up and causes spinvprovidediwith an insulation. ,On the other dle 33, with its insulated end 33', to press together contact springs and 36. In this manner current is passed from the electric energy through binding post 22, through the solenoid to binding post 23, through spring 36, spring 35 to binding post 21v and from there to the source of energy. In this manner the solenoid remains energized, and the valve remains open until an interruption of the current is caused in the electric circuit. v

In connection with "1, there has been" mentioned that on top of the solenoid isa soft iron disc 29, and a soft iron bushing 31. Particular attention is called to the latter, the lower end of which reaching into the guide tube 28, which latter is adapted for guiding ores i. The fact that bushing 3l is'intiinately connected with soft iron disc 2 9, both disc and bushingv are magnetized-the moment thepsolenoid is energized; The magnetic power of the solenoid is greatly enhanced because of the particular construction of the bushin which attracts the'core of the valve.

In Figs. 2and 3, there will be seen a modified construction of the operation mechanism, although its function remains identical with that described andexplained in connection :with 1.) V V V 1 Referring to Figslf2 'and 3, numerals21, 22 aiid' 23 denote the respective binding .posts adapted to. connect with the electric plaiiied i'abov in connection with F ig. 1.

z These binding posts pass through cover members 20 and are insulated therefrom as shown'at24'. The spacers in this arrangement'a re 'provided, in that the screws of the binding posts are longer, and pass through the soft iron laminated disc 29', from which they are insulated, as shown at 39. Contact springs 35 and 36' are placed "between a plurality of spacers and are held together by the screws of the binding post s 21' and 23.

Another set of spacers is provided between cover 20 and laminated disc 29', held toge'therby screw of binding post 22. Between these spacers there is provided a lug 4(),'to which is connected a conduit 28, leading to one end of the solenoid, while to lug 4t1,-form ing an extension of contact spring 36,is attached the conduit 37 leading to the other end of-the solenoid (see 3). y

Attention "is called to soft iron disc- 29 l'wliichconsistsof a plurality (if-relatively thin layers adapted to enhance themagnetic power o f'th'e disc when thesolenoid 25 is energized. At the center ofdiscs 29 there is again pro- ,Yidfidjf bushing 3la which ;extends into the guide tube-28 .Itwill be observed that the end oft-he spindle 33,! of theivalve isnot hand aninsulation disc 42 is secured to the bottom face of contact spring 36'. r

I Anothenimprovement of the construction shown in Fig. 52 is the f provisionofga' soft proved arrangement.

l-laving thus explained our invention, we claim: a

1. The combination with a fluid control valve, of a casing arranged above said valve and having a hermetically sealing cover, a plurality of insulated binding posts attached to said cover and forming suspensions for the mechanism within said casing, said mechanism comprising a solenoid adapted to extend to the bottom ofsaid casing and provided atitsupper end withja laminated soft iron member, a soft iron bushing orextension arranged at the center off-said laminated member, a circuit maker and brafker disposed between said laminated member; and-[the casing coverand comprising two resilient blades,

each connected to and-held-by one-of said binding posts, thefree ends of said-blades disposed above each other and'inlinewith the center axis of said solenoid, an armature operatively arranged within said solenoid .and having an upper centralextension, adapted .-to actuate said circuit" maker and i braker, and a lower fe'xtensionformin the operating member of said valve, said clrcult maker and braker controlling an auxiliary circuit for energizing said solenoid when said armature has been operated.

2. The combination with a fluid controlv valve, of a casing arranged above said valve and having a hermetically sealing closure, an operating mechanism within theicasing,

comprising ,a solenoidadapted to extend to wards the bottom thereof and provided at its upper end with a laminated soft iron member, a soft iron bushing-or extension arranged at t-hecenter of said laminated member, suspension means connected with said closure and with said operating mechanism for suspending the, latterwithin the casing, a circuit maker and braker disposedbetwe en the laminated member and theicasing, closure and comprising. resilientfb'lades, connected toand held by said suspension means the free ends of said bladesdisposed.above one another and in line with the center axis of said solenoid, an armatureoperatively arranged within said solenoid and-havingan upper central extension adapted to -actuate said blades, anda lower extension :forming the operating memberjofsaid 'valve,fs"aid-'circuit maker and braker controlling"anauxil LUCAS KRAFT. LEOPOLD MAYR. 

